1 files changed, 4 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/associations/has_and_belongs_to_many_association.rb b/activerecord/lib/active_record/associations/has_and_belongs_to_many_association.rb
index 24871303eb..b1d454545f 100644
--- a/activerecord/lib/active_record/associations/has_and_belongs_to_many_association.rb
+++ b/activerecord/lib/active_record/associations/has_and_belongs_to_many_association.rb
@@ -110,6 +110,10 @@ module ActiveRecord
             []
           end
         end
+
+        def invertible_for?(record)
+          false
+        end
     end
   end
 end